445053551 has 4 divisors (see below), whose sum is σ = 448992192. Its totient is φ = 441114912.

The previous prime is 445053547. The next prime is 445053559. The reversal of 445053551 is 155350544.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 445053551 - 2² = 445053547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445053559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1969151 + ... + 1969376.

It is an arithmetic number, because the mean of its divisors is an integer number (112248048).

Almost surely, 2^445053551 is an apocalyptic number.

445053551 is a deficient number, since it is larger than the sum of its proper divisors (3938641).

445053551 is a wasteful number, since it uses less digits than its factorization.

445053551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938640.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 445053551 is about 21096.2923519750. The cubic root of 445053551 is about 763.4912957017.

The spelling of 445053551 in words is "four hundred forty-five million, fifty-three thousand, five hundred fifty-one".